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Introduces the /swarm multi-agent parallel fan-out mode in the Claude Code ecosystem, which was recently disabled by default with hard limits added, due to runaway recursion and cost explosion.
A Twitter thread by RaulJuncoV explains the fan-out problem in push-based notification systems, using the example of designing for 100M users. It discusses the hybrid push-pull approach used by Twitter and the additional challenges of stateful connections and reconnect logic.